Marvin "Marv" is a fictional character in the graphic novel series Sin City, created by Frank Miller. In the 2005 film adaptation and its 2014 sequel, he is played by Mickey Rourke. He first appears in The Hard Goodbye and follows with appearances in A Dame to Kill For, Just Another Saturday Night, and Silent Night. He makes a brief cameo in Blue Eyes (as featured in Lost, Lonely, and Lethal). Marv has been well received both as a comic book character and a film character. Source: Wikipedia (en)